JPH11248987A - Fitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fit an optical member so that the optical member is accurately matched and the matching is maintained when equipment is in operation by swiveling the fitting member which can be swiveled and adjusting the direction of the optical member. SOLUTION: To the circumferential edge below the wall part of a plate 12 surrounding a circular opening 11 bored in a fitting plate 12, a fitting pad 16 and fitting assemblies 18 and 19 are fitted. The fitting assemblies 18 and 19 have thin and long fitting members. The fitting pad of an optical member is provided radially inside of the tin and long fitting members and the other end part receives the force applied by a solenoid. A leaf spring 30 fitted to the fitting plate 12 with a screw 32 holds the optical member on the fitting pad inside the opening 11. The solenoid is excited, the end part on the opposite side of the thin and long fitting member deflects slightly to swivel the optical member around the fitting pad 16, thereby changing the direction of the optical member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to mounting an optical member.

[0002]

2. Description of the Related Art In instruments such as spectrometers,
There is a requirement that the optical member be mounted such that the optical member is accurately aligned with a preselected axis and this alignment can be maintained during operation of the instrument.

[0003]

SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide a mounting device which can achieve the above-mentioned requirements in a relatively simple and effective manner.

[0004]

In order to solve this problem, according to the structure of the present invention, three vertexes arranged at substantially the apexes of a triangle are used.
At least two mounting elements are provided.
Two mounting elements are each provided on a portion of the pivotable mounting member that is supported to be pivotable against the resilience of the resilient pivot mounting portion;
Means are provided for applying a force to each of the other portions of the pivotable mounting member for pivoting the pivotable mounting member about the rotary mounting, thereby adjusting the orientation of the optical member. I did it.

[0005]

In the above device, one mounting element is stationary and the other two are each provided on a pivotable mounting member.

[0006] The means for applying force may include a solenoid.

The pivot mounting may comprise a torsion bar device formed as an integral part of the pivotable mounting member.

[0008] Each pivotable mounting member is substantially elongate,
A mounting element is provided near one end of the mounting member and means for applying a force are arranged to act on the other end of the mounting member. Each rotatable mounting member may have an integral, laterally extending connection that provides a torsion bar pivot mounting device.

[0009] The mounting elements may be arranged at the vertices of a conformal triangle.

In a device constructed according to the invention, the optical element is mounted so as to be supported by three mounting elements. The optical member is aligned by applying a force to one or both of the pivotable mounting members such that the mounting member moves against the elasticity of the pivot mounting. When the pivoting force is removed, the pivot mount returns to its original position due to the elastic action of the pivot mount. Means for applying a force to the pivotable mounting member may be incorporated into the feedback loop device to automatically align the optical member based on the detected signal by detecting an output taken from the optical member. Can be. For example, the mounting device may be such that this detected signal is kept at a maximum.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in more detail with reference to the drawings.

The mounting device shown in the drawing includes an optical member 10 in a circular opening 11 formed in a mounting plate 12.
It is formed to support. The opening 11 is formed such that a lip 14 extending inward in the radial direction around the circumference is formed on the lower peripheral edge of the wall of the plate surrounding the opening. Stationary first mounting pad 16
Are supported on the lip 14.

Two mounting assemblies 18 and 19 are provided at 120 ° from the stationary pad 16. As specifically shown in FIG. 3, each mounting assembly 18 is formed by machining the mounting plate 12 in place to form an elongated mounting member 20, said mounting member 20 comprising a torsion bar. It is integrally connected to the body of the mounting plate by laterally extending portions 21, 22 to form the device. A mounting pad 24 for the optical member is provided on a radially inward portion of the elongated mounting member 20, whereas the other end is provided by a solenoid rod 26 connected to a solenoid (not shown). It can receive the applied force. As can be seen from FIG.
The force applied downward in the direction of arrow 28 causes the elongate mounting member 20 to pivot slightly about the laterally extending portions 21, 22, thereby lifting the mounting pad 24. Similarly, when this force is reduced, the mounting pad 2
4 returns to the lower position due to the natural elasticity of the device. FIG.
The range of movement of the mounting pad 24 that can be provided by the device shown in FIG.

The mounting assembly shown in FIG.
Are provided at the positions 18 and 19, respectively.

Accordingly, as shown in FIG. 2, the optical members are mounted on mounting pad 16 and two mounting pads 24 at equally spaced locations. A leaf spring 30 attached to the mounting plate 12 by screws 32 holds the optical member at a predetermined position on the mounting pad inside the opening 11.

During operation, the stationary pad 16 holds the optical member 1
Acting as a pivot point for zero, whereas the other two mounting pads 24 can be adjusted to pivot the optic about the pivot point. When adjustment of the optical member is required, one or both linear solenoids are energized, thereby exerting a force on the radially outer end of the elongated mounting member 20. This causes the opposite end of the elongated mounting member supporting the mounting pad 24 to flex slightly, thus pivoting the optical member about the mounting pad 16. Increasing the current to the solenoid can increase the force exerted by the solenoid, thereby providing increased movement of the mounting pad. This in itself causes the optical member to pivot about the pivot pad, thereby changing the orientation of the optical member. By monitoring the output signals of the optical members, it is possible, for example, to control the two solenoids so that the optical members are kept in an optimal position when the optical output is at a maximum.

If the elastic limit of the torsion bar assembly is not exceeded, the device will return to its original position when the force of the solenoid is reduced or eliminated. Thus, by controlling the current in both solenoids, the deflection of the mounting pad 24 can be controlled by the optical member 10 within the limits of mounting pad movement.
Can be used to occupy any desired orientation.

As shown in FIG. 2, the optical member can be a mirror, in which case the light beam 34 is shown incident on the mirror. By monitoring the output signal reflected from the mirror and using appropriate feedback devices, an automatic adjustment of the current applied to the solenoid can be made to maintain light energy at a maximum.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a mounting device according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view taken along line XX of FIG.

FIG. 3 shows a part of the mounting device of FIG. 1 in more detail.

[Explanation of symbols]

Reference Signs List 10 optical member, 11 opening, 12 mounting plate, 14 lip, 16 mounting pad, 18, 1
9 mounting assembly, 20 mounting members, 21,
22 laterally extending parts, 24 mounting pads,
26 solenoid rod, 28 arrow, 30 leaf spring, 32 screw, 34 light beam

Claims (8)

[Claims] 1. A mounting device for mounting an optical member such that the optical member is accurately oriented at an angle with respect to a predetermined axis, the mounting device comprising three mounting elements disposed substantially at the apex of a triangle. Wherein at least two mounting elements are each provided on a portion of the pivotable mounting member that is supported to be pivotable against the elasticity of the resilient pivot mounting portion, Furthermore, means are provided for applying a force to each of the other parts of the pivotable mounting member in order to pivot the pivotable mounting member about the pivot mounting and thereby adjust the orientation of the optical member. A mounting device, characterized in that it is provided. 2. The mounting device according to claim 1, wherein one of the mounting elements is stationary and the other two mounting elements are provided on individual pivotable mounting members. 3. The mounting device according to claim 1, wherein the means for applying a force includes a solenoid. 4. The mounting device according to claim 1, wherein the pivot mounting portion comprises a torsion bar device formed as an integral part of the pivotable mounting member. 5. Each of the pivotable mounting members is substantially elongated,
5. A mounting device according to claim 4, wherein a mounting element is provided near one end of the mounting member and means for applying a force are arranged to act on the other end of the mounting member. 6. The mounting device according to claim 5, wherein each pivotable mounting member has an integral, laterally extending connection providing a torsion bar pivot mounting device. 7. The mounting device according to claim 1, wherein the mounting elements are arranged at the vertices of an equilateral triangle. 8. The means for applying a force is arranged to be controlled based on the detected output of the optical member, wherein the orientation of the member can be automatically adjusted. The mounting device according to claim 1, wherein the mounting device is provided.